基于NPA模型对龙泓涧生态塘污染物的平衡分析

Balance Analysis on Pollutants in Longhongjian Ecological Pond Based on NPA Model

通过建立污染物净积累(NPA)模型,基于龙泓涧流域生态塘水量平衡关系,对其污染物进行平衡分析,主流生态塘中COD、TN和TP的净积累量分别为11 696、3 759和35.7 kg,支流生态塘中COD、TN和TP的净积累量分别为12 360、3 340和91.3 kg。根据污染物净积累量分析结果,可知生态塘对TN和TP的富集程度较高,同时可准确分析出整个生态塘的纳污能力与污染物净积累量的基本现状,可为相关部门的科学管理和污染物输入控制提供一定的依据。

The net pollutant accumulation （NPA）model was established to performed the balance analysis of pollutants based on Longhongjian water balance. The net accumulations of COD, TN and TP in the mainstream ecological ponds were 11 696 kg, 3 759 kg and 35.7 kg respectively, and those in the tributary ecological ponds were 12 360 kg, 3 340 kg and 91.3 kg respectively. According to the analysis results, the ecological ponds had the high enrichment degree of TN and TP. In addition, the model could also accurately show the basic status of assimilative capacity and net accumulation of pollutants, and it can provide the basis for scientific management of the related departments and pollutant control.